Lamp panel assembly, LED display module and LED display screen

The utility model belongs to the technical field of display screens, and provides a lamp panel assembly, an LED display module and an LED display screen, the lamp panel assembly comprises a substrate, a plurality of light-emitting parts, a solder mask layer and a packaging layer, the light-emitting parts are arranged on the top surface of the substrate at intervals, the solder mask layer covers the area, where the light-emitting parts are not arranged, of the substrate, the packaging layer covers the solder mask layer and the light-emitting parts, and the packaging layer covers the light-emitting parts. The shading layer surrounds the outer sides of the substrate, the solder mask layer and the packaging layer, and the shading layer at least covers a gap between the substrate and the solder mask layer and a gap between the solder mask layer and the packaging layer. According to the lamp panel assembly provided by the invention, when the substrate and the solder mask layer and/or the solder mask layer and the p